ODP Attribution - Required HTML code that must be included on the category pages of sites using ODP data. Use is specified in the Free Use License. - http://www.dmoz.org/become_an_editor/
Free Use License - ODP's license governing use of the directory's data. - http://www.dmoz.org/license.html
Terms of Use - Open Directory Project's terms of use. - http://www.dmoz.org/termsofuse.html
Social Contract - ODP's social contract with the Web community to keep the ODP a free and openly available resource. - http://www.dmoz.org/socialcontract.html